RFR: 8344134: Use static property in SystemLookup

[Eirik Bjørsnøs]

On Mon, 18 Nov 2024 12:40:43 GMT, Per Minborg <pminborg at openjdk.org> wrote:

> This PR proposes to use a static property already resolved instead of calling `System.getProperty()`.

Drive by observation: In java.base, there are four similar instances in `ImageReaderFactory.JAVA_HOME`, `SystemImage::findHome`, `CDS::dumpSharedArchive` and `DomainName::getPubSuffixStream`.

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PR Comment: https://git.openjdk.org/jdk/pull/22205#issuecomment-2483368727